Why is Mycroft Project asking JavaScript be enabled to install a search plugin?

When I try to install any of the search engine plugins from http://mycroft.mozdev.org/index.html, I get the following msg:
«JavaScript must be enabled to install a search plugin.
If you have installed NoScript, you will need to allow this page to run scripts.»

I'm using Ubuntu 12.10, Mozilla FF 17.0.1 and JavaScript is already enabled in it.
The same plugins create no whatsoever problem in Windows7, so why can't I use them in Ubuntu too?

P.S. I've noticed that all the problematic plugins (most of the good ones out there!), are all preceded by the OpenSearch "A9" icon for Mozilla FF v. 2/3. The ones preceded by the Mac Apple icon, are swiftly added to the list of search engines and give no problem at all. However, these are few in number and the ones I want, are mostly OpenSearch compatible. Any way to fix this issue?

When I try to install any of the search engine plugins from http://mycroft.mozdev.org/index.html, I get the following msg:
«JavaScript must be enabled to install a search plugin.
If you have installed NoScript, you will need to allow this page to run scripts.»
I'm using Ubuntu 12.10, Mozilla FF 17.0.1 and JavaScript is already enabled in it.
The same plugins create no whatsoever problem in Windows7, so why can't I use them in Ubuntu too?
P.S. I've noticed that all the problematic plugins (most of the good ones out there!), are all preceded by the OpenSearch "A9" icon for Mozilla FF v. 2/3. The ones preceded by the Mac Apple icon, are swiftly added to the list of search engines and give no problem at all. However, these are few in number and the ones I want, are mostly OpenSearch compatible. Any way to fix this issue?

Chosen solution

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

Do not click the Reset button on the Safe mode start window or otherwise make changes.

Chosen Solution

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

Do not click the Reset button on the Safe mode start window or otherwise make changes.

Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do not click the Reset button on the Safe mode start window or otherwise make changes.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Question owner

Wow! That solved my problem. Now, how do I get it to work without going into Safe Mode? Or do I have to always switch to Safe Mode every time I want to add a search engine plugin from the Mycroft Project?

Wow! That solved my problem. Now, how do I get it to work without going into Safe Mode? Or do I have to always switch to Safe Mode every time I want to add a search engine plugin from the Mycroft Project?

If it works in Firefox Safe-mode then disable all extensions (Tools > Add-ons > Extensions) and then try to find which is causing it by enabling one extension at a time until the problem reappears.
Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
See also:
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

You can check for problems with preferences and try to rename or delete the prefs.js file and possible numbered prefs-##.js files and a possible user.js file to reset all prefs to the default values.
*http://kb.mozillazine.org/Preferences_not_saved
*http://kb.mozillazine.org/Resetting_preferences
----
Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Thank you cor-el for your help but it turned out I had to install Firefox search engine plugins with root privilege. Then the pop-up window showed up and I could add the needed search engine.
Still not sure if this is a Firefox or Ubuntu issue, let alone if this can be called an issue at all.
I hope this helps someone to install Firefox search engines too!

Thank you cor-el for your help but it turned out I had to install Firefox search engine plugins with root privilege. Then the pop-up window showed up and I could add the needed search engine.
Still not sure if this is a Firefox or Ubuntu issue, let alone if this can be called an issue at all.
I hope this helps someone to install Firefox search engines too!

Helpful Reply

For Ubuntu 12.10 users:
Disable the Unity Desktop Integration Plugin & restart the browser. Then you can add search engines from the Firefox website.

As I'm using Gnome Shell, I haven't renabled it since. Unity users should try.

For Ubuntu 12.10 users:
Disable the Unity Desktop Integration Plugin & restart the browser. Then you can add search engines from the Firefox website.
As I'm using Gnome Shell, I haven't renabled it since. Unity users should try.